Method of feeding paper.



H. A. W. WOOD.

METHOD OF FEEDING PAPER.

APPLICATION FILED MAY 23, I914.

LYYQQKQ, Patented Feb. 1, 1916.

2 SHEETSSHEE T l- 74%? wwa f smmw H. A. W. WOOD.

METHOD OF FEEDING PAPER.

APPLICATION FILED MAY 23, 1914.

Patentd Feb. 1,

2 SHEETS-SHEET 2.

UNITED STATES PATENT cra HENRY A. WISE W OD, or NEW YORK, N. -Y., ASSIGNOR,,BY mnsun ASSIGNMENTS, :ro

WOOD NEWSPAPER MACHINERY CORPORATION, OF NEW YORK, N. Y., A C RPORA- TION OF VIRGINIA.

Specification of Letters Patent.

METHOD OF FEEDING PAPER.

Bate-nted Feb. 1, 1916.

Original application filed April 3, 1909, Serial No. 487,629. Divided and this application filed May 23,

1914. Serial No. 840,488.

To all whom it may concern: Y

Be it known that I, I'IENRY A. WISE WOOD,-

a citizen of the United States, residing at New York, in'the county of New York and State of New York, have invented a new and useful Method of Feeding Paper, ofwhich the following is a specification.

This is a division of my application for patent on a paper lubricatin de ice for printing press, filed April-3, 1909, Serial The object of this invention is to improve the operation of printing presses, particularly those which print from a continuous strip or web. In machines of this character, the web of paper is led Over a number of rolls, the surfaces of which move at the same speed as, or slightly greater than, the paper. When the printed surface of the web turns Over a roller or cylinder which moves therewith, the freshly printed surface of the web sticks to the surface of the roller or cylinder and considerable strain has to be put upon the web to pull the same from that surface, although the surface of' the roller moves with the web. These factors render it necessaryto put the Web under considerable tension, which tension increases as the speed increases and which may become so great as to break the web. These factors therefore limit the speed of the machine and tend to damage the impressions. I have discovered that these factors can belargely eliminated by interposing a thin film of air between the web and the rotary surfaces over which it runs and which normally support it and remain in contact with it. for an appreciable time, which film acts as a cushion or lubricant and assists the web in its travel ver the guiding and directing surfaces. Not only does this film of air act to helpv the web in its passage through the machine, but it helps to prevent smutting of the impressions as the same obviates a hard or intimatecontact of the web with the various surfaces. The film of air also acts to help dry the ink. This thin lubricating film of air to prevent hard rubbing and smutting may be.obtained by perforating the surfaces of the guiding rollers, cutting and collecting cylinders, etc.,

with minute holes and by forcing air under low pressure out through these holes.

Another difliculty which is encountered in running a web of paper'rapidly through a printing machine is that the friction is apt to generatestatic electricity which causes the paper to cling or adhere to the surfaces over which it passes.

or break. This factorcan be largely over- 'come by the air lubricating method herein described and when extreme electrical condItIOIlS' are encountered, steam or water vapor can'be introduced into the air which is a web printing"press and folding machine illustrating diagrammatically the application of my invention thereto; Fig. 2 is a side elevation on an enlarged scale showing part of the pipe line that is employed to direct air to the inside of the various web guiding This also increases the tension and the liability of the web to tear surfaces; Fig. 3 is a sectional View illustrat- .ing a construction which may be used so that air can be introduced into one of the journals of the rollers; Fig. 4 is a view of a shield which may be employed with a guiding roller to cover up the surface thereof which does not contact with the web, and Fig. 5 is a modification hereinafter described showing a different way by which the thin lubricating film of air can be introduced between a guiding surface and a web.

Referring to the drawings and in detail,

it will be seen that I have shown my invention as applied and adapted to an ordinary two-deck newspaper printing machine. The web w for the lower deck is drawn from a 'web roll W, is led around guide roller 11,

adjustable guide roller 12, guide roller 13,

guide roller 14, around the first impression cylinder A, around the second impression cylinder B, around guide roller 15 to guide roller 1.6. The web is slit into two sections by a slitter S and a'lin'e of paste may be applied to the center of one of the two sections of the. web at this point if desired. From this point the section of the web is deflected laterally over an angle or turner bar 17 and then is brought back into the path of the section to of the web by another angle bar 18, whereby the twosections of the web are associated or plicated. From this point the plicated webs are led around a guide roller 19, around an adjustable guide roller '20 to a guide roller 21 and then down over a longitudinal former F. One or more decks or similar printing presses may vbe arranged above the one previously described and. one section of printedweb w therefrom may be led directly to the guide roller 21 and the other section. 10 therefrom after passing around roller 160, adjusting roller 161, roller 16 and the angle or turner bars of this press,

uide roller 22 and roller 23 to the roller 21. Thus the web or webs printed and associated in the second deck can be associated with the web or webs printed and associated by the lower deck. The associated webs are drawn down over the former by rollers 2%24 and 1 25'25 and thus are given a longitudinal fold. From these rollers the associated and folded webs are drawn between a folding and collecting cylinder G which may be of any of the ordinary constructions and coeperating cutting cylinder. The collecting cylinder Gr may be provided with rotary folders which may act to give the severed section of the webs a transverse fold in betweenthe folding rollers 26 -26, from which point the folded product is' delivered by a 3 way. Cooperating with the first impression rotary deliverer Q operating in the usual cylinder A" is a plate or printing cylinder'C and coeperating with the second impression cylinder B is a platelor printing cylinder D. Coeperating with each of the printing cylinders is an ink drum E from which ink is taken tothe plate cylinders by'the usual form inking rollers. Coeperating with this drum is an ordinary ink supplying mechanism consisting of an'inkfountain, vibrat- 1 ing ductor rller and ink distributing and spreading rofis.

As thus far described, the parts referred to are intended to designate and particu-- larize the instrumentalities which go to make up a newspaper web printing press.

It will be seen that as each web runs through the machine it contacts with a number of surfaces which move with it. Thus in the case of the web in the complete lower press, the same has to run substantially withthe following difierent rotary surfaces or parts outside of the impression cylinders A. and E; to wit,rollersl1,12, 13, 14:, 15, 16, 19, 20, 21, 2 l-24, 25-25, cylinder Gr and rollers 26-26. @bviously', this holds the web back puts the same under tension and smuts the impression. The freshly printed faces specified also.

be largely overcome may be led around adjustable with'the air supply. In

contacts in its path beyond the roller 15.

The engagement of the Web with the suris apt to generate static electricity whichcauses the web to cling to the surfaces. These factors additionally cause a drag on the web and smut the freshly printed impression. These'points are thus described in detail in order that it may be clear what considerable factors of resistance and smut the web encounters in even the simplest form of web prlntlng press. I .have discovered that these factors, which are largely the limiting factors of the speed of the web presses of to-day, can by'blowing or forcing a thin film of air between the rotary surfaces over which the web runs and the web itself. This film will cushion the web or will form sortof a lubricating engagement between the web and the surface and will prevent intimate contact of the web therewith. This air film or lubrication is particularly advantageousin preventing offset on these surfaces which move with the web.

The invention can be practised in very many ways and I have shown the same as practisedinconnection with the web press previously described by providing a source of air pressure; by perforating the rollers or cylinders over which the web passes and connecting. the source of air pressure to the journals of the rollers or cylinders; by maksurface thereof over which the web runs -with minute perforations; and connecting the walls of the former this way, the advantages previously pointed out are easily obtained. I The following is a. detailed description of this arrangement. M designates a suitable motor which may be the motor the space between which drives the press or anyother source of power. This motor is connected to operate anair pum P of any kind." Extending from the eduction' of. the air pump or from an interposed storage tank T is a pipe 30 which may rise vertically of the press. Connected to the pipe 30 are pipes 31 which extend along horizontally at the side of each press, as many pipes 31 being employed as there are decks to the machine. Extending from the pipe 31 are branches 32 each of 'which has a valve 33. A branch "32 is provided for each of the rollers 11, 13, 1 15 and 16. These branches connect to boxes 34: in which the journals of the guides are journaled, as shown in Fig. 3. The guide rollers are made hollow as shown in Fig. 3 and the journal of each one thereof on the side of the machine where the pipe line is arranged is made hollow or in the form of a tube so that the air will be forced inside of the roller. Each of the rollers is protact of the web therewith sothat there will be no wasteof air. This shield may be faced with cloth or any suitable surface so Ias to close tightly the perforations in the roller which are not engaged by the web. The

. pipeline 31 -is extended up atthe end of the hollow and the surfaces ofthe same are promachine as at 37 and is provided with valved branches'38 which communicate with the journals of the collecting cylinder G with the journals of the folding rollers 26-26,

and with a journal of the rotary deliverer Q. These rollers and cylinders are made vided with minuteperforations as previously described. Shields may be used around these rollers or cylinders if desired to expose only. the perforations therein which are in engagement with the Web. The perforations in the various cylinders and rollers. may be proportioned 'and distributed over the surfaces so as to lift or separate the the surfaces. v I a 1 In some 'casesfi-t may; be desirable for the web therefrom evenly or as desired from.

reasons previously stated, tointr'oduce water vapor into the air which is forced out through the parts of' the machine. This can be done 'by supplying steam or water through a pipe 42 to the pump PL Or if it is desired to supply the water vapor or steam to any one part as to the particular roller or surface, the same can be accomplished by introducing a nozzle,'.as indicated at 43 in "In some cases,

dotted lines inFig. a, as the branch'pipe communicating with the particular surface.

in the periphery thereof, the film of air can be introduced by a suitable nozzle or nozzles 45 arranged to blow a" film or 'blast of air between the surface of the web and the guiding surface as they move either orboth toward or from each other, as shown in Fig. .5.

Many other difierent devices, apparatuses andconnections' can be devised by a skilled engineer for applying the principle of my invention to difierent forms of printing presses. I have only shown in this applicainstead of introducing the film of air into the inside of the roller and letting the same out through perforations tion what I now believe to be the best form for practising the invention."

The details and arrangements herein shown and described can therefore be greatly altered without departing from the broad scope of the invention as expressed in the claim. Therefore I do not wish to be limited to all the details of construction shown or to'the particular form of the'device herein shown and described,.but I, What .I do claim is:

-The 'method of assisting the travel of paper, which consists in forcinga lubricat- Iing fluid such-as air between the paper and a surface or surfaces over which the same passes, and introducing water vapor fintoj the air. v

In testimony whereofI' have hereunto set my. hand, in the presence" of-tw'o subscribing witnesses.

" v HENRY A. VVOOD, Witnesses LILLIA N C. JONES,

11)." M. Strormmt 

